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30a4f2a8 | 1 | /* |
30a4f2a8 | 2 | * DEBUG: section 15 Neighbor Routines |
3 | * AUTHOR: Harvest Derived | |
4 | * | |
2b6662ba | 5 | * SQUID Web Proxy Cache http://www.squid-cache.org/ |
e25c139f | 6 | * ---------------------------------------------------------- |
30a4f2a8 | 7 | * |
2b6662ba | 8 | * Squid is the result of efforts by numerous individuals from |
9 | * the Internet community; see the CONTRIBUTORS file for full | |
10 | * details. Many organizations have provided support for Squid's | |
11 | * development; see the SPONSORS file for full details. Squid is | |
12 | * Copyrighted (C) 2001 by the Regents of the University of | |
13 | * California; see the COPYRIGHT file for full details. Squid | |
14 | * incorporates software developed and/or copyrighted by other | |
15 | * sources; see the CREDITS file for full details. | |
30a4f2a8 | 16 | * |
17 | * This program is free software; you can redistribute it and/or modify | |
18 | * it under the terms of the GNU General Public License as published by | |
19 | * the Free Software Foundation; either version 2 of the License, or | |
20 | * (at your option) any later version. | |
26ac0430 | 21 | * |
30a4f2a8 | 22 | * This program is distributed in the hope that it will be useful, |
23 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
24 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
25 | * GNU General Public License for more details. | |
26ac0430 | 26 | * |
30a4f2a8 | 27 | * You should have received a copy of the GNU General Public License |
28 | * along with this program; if not, write to the Free Software | |
cbdec147 | 29 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
e25c139f | 30 | * |
019dd986 | 31 | */ |
090089c4 | 32 | |
44a47c6e | 33 | #include "squid.h" |
07f765a3 | 34 | #include "ProtoPort.h" |
c0941a6a | 35 | #include "acl/FilledChecklist.h" |
55cbb02b AJ |
36 | #include "comm/Connection.h" |
37 | #include "comm/ConnectStateData.h" | |
62ee09ca | 38 | #include "CacheManager.h" |
55cbb02b | 39 | #include "event.h" |
aa839030 | 40 | #include "htcp.h" |
528b2c61 | 41 | #include "HttpRequest.h" |
aa839030 | 42 | #include "ICP.h" |
528b2c61 | 43 | #include "MemObject.h" |
aa839030 | 44 | #include "PeerDigest.h" |
b24880fe | 45 | #include "PeerSelectState.h" |
a98bcbee | 46 | #include "SquidMath.h" |
985c86bc | 47 | #include "SquidTime.h" |
aa839030 | 48 | #include "Store.h" |
9b5c4a9a | 49 | #include "icmp/net_db.h" |
96d89ea0 | 50 | #include "ip/Address.h" |
090089c4 | 51 | |
429fdbec | 52 | /* count mcast group peers every 15 minutes */ |
53 | #define MCAST_COUNT_RATE 900 | |
54 | ||
d67acb4e | 55 | int peerAllowedToUse(const peer *, HttpRequest *); |
190154cf | 56 | static int peerWouldBePinged(const peer *, HttpRequest *); |
f5b8bbc4 | 57 | static void neighborRemove(peer *); |
f5b8bbc4 | 58 | static void neighborAlive(peer *, const MemObject *, const icp_common_t *); |
399cabec | 59 | #if USE_HTCP |
60 | static void neighborAliveHtcp(peer *, const MemObject *, const htcpReplyData *); | |
61 | #endif | |
56b62ecc | 62 | static void neighborCountIgnored(peer *); |
f5b8bbc4 | 63 | static void peerRefreshDNS(void *); |
b69f7771 | 64 | static IPH peerDNSConfigure; |
cfd66529 | 65 | static bool peerProbeConnect(peer *); |
eb406bb7 | 66 | static CNCB peerProbeConnectDone; |
f5b8bbc4 | 67 | static void peerCountMcastPeersDone(void *data); |
68 | static void peerCountMcastPeersStart(void *data); | |
69 | static void peerCountMcastPeersSchedule(peer * p, time_t when); | |
b3264694 | 70 | static IRCB peerCountHandleIcpReply; |
62e76326 | 71 | |
b7ac5457 | 72 | static void neighborIgnoreNonPeer(const Ip::Address &, icp_opcode); |
ed7f5615 | 73 | static OBJH neighborDumpPeers; |
74 | static OBJH neighborDumpNonPeers; | |
75 | static void dump_peers(StoreEntry * sentry, peer * peers); | |
090089c4 | 76 | |
090089c4 | 77 | static icp_common_t echo_hdr; |
30a4f2a8 | 78 | static u_short echo_port; |
30a4f2a8 | 79 | |
c7a3724d | 80 | static int NLateReplies = 0; |
40a1495e | 81 | static peer *first_ping = NULL; |
28070024 | 82 | |
a2c963ae | 83 | const char * |
b69f7771 | 84 | neighborTypeStr(const peer * p) |
69a71bd7 | 85 | { |
e102ebda | 86 | if (p->type == PEER_NONE) |
62e76326 | 87 | return "Non-Peer"; |
88 | ||
b69f7771 | 89 | if (p->type == PEER_SIBLING) |
62e76326 | 90 | return "Sibling"; |
91 | ||
b69f7771 | 92 | if (p->type == PEER_MULTICAST) |
62e76326 | 93 | return "Multicast Group"; |
94 | ||
69a71bd7 | 95 | return "Parent"; |
96 | } | |
97 | ||
090089c4 | 98 | |
d9f9d78b | 99 | peer * |
b7ac5457 | 100 | whichPeer(const Ip::Address &from) |
090089c4 | 101 | { |
22e4fa85 | 102 | int j; |
62e76326 | 103 | |
b69f7771 | 104 | peer *p = NULL; |
cc192b50 | 105 | debugs(15, 3, "whichPeer: from " << from); |
62e76326 | 106 | |
26ac0430 | 107 | for (p = Config.peers; p; p = p->next) { |
62e76326 | 108 | for (j = 0; j < p->n_addresses; j++) { |
cc192b50 | 109 | if (from == p->addresses[j] && from.GetPort() == p->icp.port) { |
62e76326 | 110 | return p; |
111 | } | |
112 | } | |
090089c4 | 113 | } |
62e76326 | 114 | |
4eda6afe | 115 | return NULL; |
090089c4 | 116 | } |
117 | ||
701a8572 | 118 | peer_t |
190154cf | 119 | neighborType(const peer * p, const HttpRequest * request) |
24a1003d | 120 | { |
62e76326 | 121 | |
b012353a | 122 | const struct _domain_type *d = NULL; |
62e76326 | 123 | |
b69f7771 | 124 | for (d = p->typelist; d; d = d->next) { |
cc192b50 | 125 | if (0 == matchDomainName(request->GetHost(), d->domain)) |
62e76326 | 126 | if (d->type != PEER_NONE) |
127 | return d->type; | |
24a1003d | 128 | } |
8a368316 AJ |
129 | #if PEER_MULTICAST_SIBLINGS |
130 | if (p->type == PEER_MULTICAST) | |
131 | if (p->options.mcast_siblings) | |
132 | return PEER_SIBLING; | |
133 | #endif | |
62e76326 | 134 | |
b69f7771 | 135 | return p->type; |
24a1003d | 136 | } |
137 | ||
7b3bd12c | 138 | /* |
62fd6124 | 139 | * peerAllowedToUse |
7b3bd12c | 140 | * |
dd4bd44e | 141 | * this function figures out if it is appropriate to fetch REQUEST |
62fd6124 | 142 | * from PEER. |
7b3bd12c | 143 | */ |
d67acb4e | 144 | int |
190154cf | 145 | peerAllowedToUse(const peer * p, HttpRequest * request) |
090089c4 | 146 | { |
62e76326 | 147 | |
b012353a | 148 | const struct _domain_ping *d = NULL; |
090089c4 | 149 | int do_ping = 1; |
ce66013b | 150 | assert(request != NULL); |
62e76326 | 151 | |
9689d97c | 152 | if (neighborType(p, request) == PEER_SIBLING) { |
8a368316 AJ |
153 | #if PEER_MULTICAST_SIBLINGS |
154 | if (p->type == PEER_MULTICAST && p->options.mcast_siblings && | |
155 | (request->flags.nocache || request->flags.refresh || request->flags.loopdetect || request->flags.need_validation)) | |
11992b6f | 156 | debugs(15, 2, "peerAllowedToUse(" << p->name << ", " << request->GetHost() << ") : multicast-siblings optimization match"); |
8a368316 | 157 | #endif |
62e76326 | 158 | if (request->flags.nocache) |
159 | return 0; | |
160 | ||
161 | if (request->flags.refresh) | |
162 | return 0; | |
163 | ||
164 | if (request->flags.loopdetect) | |
165 | return 0; | |
166 | ||
167 | if (request->flags.need_validation) | |
168 | return 0; | |
9689d97c | 169 | } |
62e76326 | 170 | |
b6a2f15e | 171 | if (p->peer_domain == NULL && p->access == NULL) |
62e76326 | 172 | return do_ping; |
173 | ||
090089c4 | 174 | do_ping = 0; |
62e76326 | 175 | |
b6a2f15e | 176 | for (d = p->peer_domain; d; d = d->next) { |
cc192b50 | 177 | if (0 == matchDomainName(request->GetHost(), d->domain)) { |
62e76326 | 178 | do_ping = d->do_ping; |
179 | break; | |
180 | } | |
181 | ||
182 | do_ping = !d->do_ping; | |
30a4f2a8 | 183 | } |
62e76326 | 184 | |
b6a2f15e | 185 | if (p->peer_domain && 0 == do_ping) |
62e76326 | 186 | return do_ping; |
187 | ||
505e35db | 188 | if (p->access == NULL) |
62e76326 | 189 | return do_ping; |
190 | ||
c0941a6a | 191 | ACLFilledChecklist checklist(p->access, request, NULL); |
8ae8bb05 | 192 | checklist.src_addr = request->client_addr; |
3c11d1f5 | 193 | checklist.my_addr = request->my_addr; |
62e76326 | 194 | |
4749aee5 | 195 | #if 0 && USE_IDENT |
196 | /* | |
197 | * this is currently broken because 'request->user_ident' has been | |
198 | * moved to conn->rfc931 and we don't have access to the parent | |
199 | * ConnStateData here. | |
200 | */ | |
94e7025e | 201 | if (request->user_ident[0]) |
62e76326 | 202 | xstrncpy(checklist.rfc931, request->user_ident, USER_IDENT_SZ); |
203 | ||
94e7025e | 204 | #endif |
62e76326 | 205 | |
108d65b2 | 206 | return checklist.fastCheck(); |
090089c4 | 207 | } |
208 | ||
62fd6124 | 209 | /* Return TRUE if it is okay to send an ICP request to this peer. */ |
210 | static int | |
190154cf | 211 | peerWouldBePinged(const peer * p, HttpRequest * request) |
62fd6124 | 212 | { |
b69f7771 | 213 | if (!peerAllowedToUse(p, request)) |
62e76326 | 214 | return 0; |
215 | ||
cd196bc8 | 216 | if (p->options.no_query) |
62e76326 | 217 | return 0; |
218 | ||
d1b63fc8 | 219 | if (p->options.background_ping && (squid_curtime - p->stats.last_query < Config.backgroundPingRate)) |
62e76326 | 220 | return 0; |
221 | ||
cd196bc8 | 222 | if (p->options.mcast_responder) |
62e76326 | 223 | return 0; |
224 | ||
83b381d5 | 225 | if (p->n_addresses == 0) |
62e76326 | 226 | return 0; |
227 | ||
0e614a06 | 228 | if (p->icp.port == 0) |
62e76326 | 229 | return 0; |
230 | ||
62fd6124 | 231 | /* the case below seems strange, but can happen if the |
232 | * URL host is on the other side of a firewall */ | |
b69f7771 | 233 | if (p->type == PEER_SIBLING) |
62e76326 | 234 | if (!request->flags.hierarchical) |
235 | return 0; | |
236 | ||
83b381d5 | 237 | /* Ping dead peers every timeout interval */ |
238 | if (squid_curtime - p->stats.last_query > Config.Timeout.deadPeer) | |
62e76326 | 239 | return 1; |
240 | ||
5537c535 | 241 | if (!neighborUp(p)) |
242 | return 0; | |
62e76326 | 243 | |
62fd6124 | 244 | return 1; |
245 | } | |
246 | ||
247 | /* Return TRUE if it is okay to send an HTTP request to this peer. */ | |
8ff4505b | 248 | int |
190154cf | 249 | peerHTTPOkay(const peer * p, HttpRequest * request) |
62fd6124 | 250 | { |
b69f7771 | 251 | if (!peerAllowedToUse(p, request)) |
62e76326 | 252 | return 0; |
253 | ||
b69f7771 | 254 | if (!neighborUp(p)) |
62e76326 | 255 | return 0; |
256 | ||
c7f9eb6d | 257 | if (p->max_conn) |
62e76326 | 258 | if (p->stats.conn_open >= p->max_conn) |
259 | return 0; | |
260 | ||
62fd6124 | 261 | return 1; |
262 | } | |
263 | ||
3c6e634f | 264 | int |
190154cf | 265 | neighborsCount(HttpRequest * request) |
090089c4 | 266 | { |
b69f7771 | 267 | peer *p = NULL; |
090089c4 | 268 | int count = 0; |
62e76326 | 269 | |
40a1495e | 270 | for (p = Config.peers; p; p = p->next) |
62e76326 | 271 | if (peerWouldBePinged(p, request)) |
272 | count++; | |
273 | ||
bf8fe701 | 274 | debugs(15, 3, "neighborsCount: " << count); |
62e76326 | 275 | |
3c6e634f | 276 | return count; |
277 | } | |
090089c4 | 278 | |
deb79f06 | 279 | peer * |
190154cf | 280 | getFirstUpParent(HttpRequest * request) |
090089c4 | 281 | { |
b69f7771 | 282 | peer *p = NULL; |
62e76326 | 283 | |
40a1495e | 284 | for (p = Config.peers; p; p = p->next) { |
62e76326 | 285 | if (!neighborUp(p)) |
286 | continue; | |
287 | ||
288 | if (neighborType(p, request) != PEER_PARENT) | |
289 | continue; | |
290 | ||
291 | if (!peerHTTPOkay(p, request)) | |
292 | continue; | |
293 | ||
294 | break; | |
090089c4 | 295 | } |
62e76326 | 296 | |
bf8fe701 | 297 | debugs(15, 3, "getFirstUpParent: returning " << (p ? p->host : "NULL")); |
b69f7771 | 298 | return p; |
090089c4 | 299 | } |
300 | ||
deb79f06 | 301 | peer * |
190154cf | 302 | getRoundRobinParent(HttpRequest * request) |
48b38d01 | 303 | { |
b69f7771 | 304 | peer *p; |
305 | peer *q = NULL; | |
62e76326 | 306 | |
40a1495e | 307 | for (p = Config.peers; p; p = p->next) { |
62e76326 | 308 | if (!p->options.roundrobin) |
309 | continue; | |
310 | ||
311 | if (neighborType(p, request) != PEER_PARENT) | |
312 | continue; | |
313 | ||
314 | if (!peerHTTPOkay(p, request)) | |
315 | continue; | |
316 | ||
1d0bef67 | 317 | if (p->weight == 0) |
0d5a2006 | 318 | continue; |
1d0bef67 AJ |
319 | |
320 | if (q) { | |
321 | if (p->weight == q->weight) { | |
322 | if (q->rr_count < p->rr_count) | |
323 | continue; | |
324 | } else if ( (double) q->rr_count / q->weight < (double) p->rr_count / p->weight) { | |
325 | continue; | |
326 | } | |
0d5a2006 | 327 | } |
62e76326 | 328 | |
329 | q = p; | |
48b38d01 | 330 | } |
62e76326 | 331 | |
b69f7771 | 332 | if (q) |
62e76326 | 333 | q->rr_count++; |
334 | ||
1d0bef67 | 335 | debugs(15, 3, HERE << "returning " << (q ? q->host : "NULL")); |
62e76326 | 336 | |
b69f7771 | 337 | return q; |
48b38d01 | 338 | } |
339 | ||
d1b63fc8 | 340 | peer * |
190154cf | 341 | getWeightedRoundRobinParent(HttpRequest * request) |
d1b63fc8 | 342 | { |
343 | peer *p; | |
344 | peer *q = NULL; | |
345 | int weighted_rtt; | |
62e76326 | 346 | |
d1b63fc8 | 347 | for (p = Config.peers; p; p = p->next) { |
62e76326 | 348 | if (!p->options.weighted_roundrobin) |
349 | continue; | |
350 | ||
351 | if (neighborType(p, request) != PEER_PARENT) | |
352 | continue; | |
353 | ||
354 | if (!peerHTTPOkay(p, request)) | |
355 | continue; | |
356 | ||
357 | if (q && q->rr_count < p->rr_count) | |
358 | continue; | |
359 | ||
360 | q = p; | |
d1b63fc8 | 361 | } |
62e76326 | 362 | |
d1b63fc8 | 363 | if (q && q->rr_count > 1000000) |
62e76326 | 364 | for (p = Config.peers; p; p = p->next) { |
365 | if (!p->options.weighted_roundrobin) | |
366 | continue; | |
367 | ||
368 | if (neighborType(p, request) != PEER_PARENT) | |
369 | continue; | |
370 | ||
371 | p->rr_count = 0; | |
372 | } | |
373 | ||
d1b63fc8 | 374 | if (q) { |
62e76326 | 375 | weighted_rtt = (q->stats.rtt - q->basetime) / q->weight; |
d1b63fc8 | 376 | |
62e76326 | 377 | if (weighted_rtt < 1) |
378 | weighted_rtt = 1; | |
379 | ||
380 | q->rr_count += weighted_rtt; | |
381 | ||
4a7a3d56 | 382 | debugs(15, 3, "getWeightedRoundRobinParent: weighted_rtt " << weighted_rtt); |
d1b63fc8 | 383 | } |
62e76326 | 384 | |
bf8fe701 | 385 | debugs(15, 3, "getWeightedRoundRobinParent: returning " << (q ? q->host : "NULL")); |
d1b63fc8 | 386 | return q; |
387 | } | |
388 | ||
32a47e3e AJ |
389 | /** |
390 | * This gets called every 5 minutes to clear the round-robin counter. | |
391 | * The exact timing is an arbitrary default, set on estimate timing of a | |
392 | * large number of requests in a high-performance environment during the | |
393 | * period. The larger the number of requests between cycled resets the | |
394 | * more balanced the operations. | |
395 | * | |
396 | \param data unused. | |
397 | \todo Make the reset timing a selectable parameter in squid.conf | |
398 | */ | |
26ac0430 | 399 | static void |
32a47e3e AJ |
400 | peerClearRRLoop(void *data) |
401 | { | |
402 | peerClearRR(); | |
403 | eventAdd("peerClearRR", peerClearRRLoop, data, 5 * 60.0, 0); | |
404 | } | |
405 | ||
406 | /** | |
407 | * This gets called on startup and restart to kick off the peer round-robin | |
408 | * maintenance event. It ensures that no matter how many times its called | |
409 | * no more than one event is scheduled. | |
410 | */ | |
82056f1e | 411 | void |
32a47e3e | 412 | peerClearRRStart(void) |
82056f1e | 413 | { |
32a47e3e AJ |
414 | static int event_added = 0; |
415 | if (!event_added) { | |
416 | peerClearRRLoop(NULL); | |
417 | } | |
418 | } | |
62e76326 | 419 | |
32a47e3e AJ |
420 | /** |
421 | * Called whenever the round-robin counters need to be reset to a sane state. | |
422 | * So far those times are: | |
d85b8894 AJ |
423 | * - On startup and reconfigure - to set the counters to sane initial settings. |
424 | * - When a peer has revived from dead, to prevent the revived peer being | |
32a47e3e AJ |
425 | * flooded with requests which it has 'missed' during the down period. |
426 | */ | |
427 | void | |
428 | peerClearRR() | |
429 | { | |
430 | peer *p = NULL; | |
431 | for (p = Config.peers; p; p = p->next) { | |
62e76326 | 432 | p->rr_count = 0; |
32a47e3e AJ |
433 | } |
434 | } | |
62e76326 | 435 | |
32a47e3e AJ |
436 | /** |
437 | * Perform all actions when a peer is detected revived. | |
438 | */ | |
439 | void | |
440 | peerAlive(peer *p) | |
441 | { | |
442 | if (p->stats.logged_state == PEER_DEAD && p->tcp_up) { | |
443 | debugs(15, 1, "Detected REVIVED " << neighborTypeStr(p) << ": " << p->name); | |
444 | p->stats.logged_state = PEER_ALIVE; | |
445 | peerClearRR(); | |
446 | } | |
62e76326 | 447 | |
32a47e3e AJ |
448 | p->stats.last_reply = squid_curtime; |
449 | p->stats.probe_start = 0; | |
82056f1e | 450 | } |
451 | ||
deb79f06 | 452 | peer * |
190154cf | 453 | getDefaultParent(HttpRequest * request) |
5269d0bd | 454 | { |
b69f7771 | 455 | peer *p = NULL; |
62e76326 | 456 | |
40a1495e | 457 | for (p = Config.peers; p; p = p->next) { |
62e76326 | 458 | if (neighborType(p, request) != PEER_PARENT) |
459 | continue; | |
460 | ||
461 | if (!p->options.default_parent) | |
462 | continue; | |
463 | ||
464 | if (!peerHTTPOkay(p, request)) | |
465 | continue; | |
466 | ||
bf8fe701 | 467 | debugs(15, 3, "getDefaultParent: returning " << p->host); |
62e76326 | 468 | |
469 | return p; | |
5269d0bd | 470 | } |
62e76326 | 471 | |
bf8fe701 | 472 | debugs(15, 3, "getDefaultParent: returning NULL"); |
5269d0bd | 473 | return NULL; |
474 | } | |
475 | ||
3c50f9bd | 476 | /* |
477 | * XXX DW thinks this function is equivalent to/redundant with | |
478 | * getFirstUpParent(). peerHTTPOkay() only returns true if the | |
26ac0430 | 479 | * peer is UP anyway, so this function would not return a |
3c50f9bd | 480 | * DOWN parent. |
481 | */ | |
6a655df0 | 482 | peer * |
190154cf | 483 | getAnyParent(HttpRequest * request) |
6a655df0 | 484 | { |
485 | peer *p = NULL; | |
62e76326 | 486 | |
6a655df0 | 487 | for (p = Config.peers; p; p = p->next) { |
62e76326 | 488 | if (neighborType(p, request) != PEER_PARENT) |
489 | continue; | |
490 | ||
491 | if (!peerHTTPOkay(p, request)) | |
492 | continue; | |
493 | ||
bf8fe701 | 494 | debugs(15, 3, "getAnyParent: returning " << p->host); |
62e76326 | 495 | |
496 | return p; | |
6a655df0 | 497 | } |
62e76326 | 498 | |
bf8fe701 | 499 | debugs(15, 3, "getAnyParent: returning NULL"); |
6a655df0 | 500 | return NULL; |
501 | } | |
502 | ||
deb79f06 | 503 | peer * |
b69f7771 | 504 | getNextPeer(peer * p) |
090089c4 | 505 | { |
b69f7771 | 506 | return p->next; |
090089c4 | 507 | } |
508 | ||
deb79f06 | 509 | peer * |
510 | getFirstPeer(void) | |
090089c4 | 511 | { |
40a1495e | 512 | return Config.peers; |
090089c4 | 513 | } |
514 | ||
b8d8561b | 515 | static void |
deb79f06 | 516 | neighborRemove(peer * target) |
30a4f2a8 | 517 | { |
b69f7771 | 518 | peer *p = NULL; |
519 | peer **P = NULL; | |
40a1495e | 520 | p = Config.peers; |
521 | P = &Config.peers; | |
62e76326 | 522 | |
b69f7771 | 523 | while (p) { |
62e76326 | 524 | if (target == p) |
525 | break; | |
526 | ||
527 | P = &p->next; | |
528 | ||
529 | p = p->next; | |
b69f7771 | 530 | } |
62e76326 | 531 | |
b69f7771 | 532 | if (p) { |
62e76326 | 533 | *P = p->next; |
534 | cbdataFree(p); | |
535 | Config.npeers--; | |
4d64d74a | 536 | } |
62e76326 | 537 | |
40a1495e | 538 | first_ping = Config.peers; |
4d64d74a | 539 | } |
540 | ||
5f5e883f FC |
541 | static void |
542 | neighborsRegisterWithCacheManager() | |
543 | { | |
544 | CacheManager *manager = CacheManager::GetInstance(); | |
545 | manager->registerAction("server_list", | |
26ac0430 AJ |
546 | "Peer Cache Statistics", |
547 | neighborDumpPeers, 0, 1); | |
5f5e883f FC |
548 | |
549 | if (theInIcpConnection >= 0) { | |
550 | manager->registerAction("non_peers", | |
26ac0430 AJ |
551 | "List of Unknown sites sending ICP messages", |
552 | neighborDumpNonPeers, 0, 1); | |
5f5e883f FC |
553 | } |
554 | } | |
555 | ||
b8d8561b | 556 | void |
a86029b9 | 557 | neighbors_init(void) |
090089c4 | 558 | { |
b7ac5457 | 559 | Ip::Address nul; |
cc192b50 | 560 | struct addrinfo *AI = NULL; |
30a4f2a8 | 561 | struct servent *sep = NULL; |
b263bd3f | 562 | const char *me = getMyHostname(); |
cc192b50 | 563 | peer *thisPeer = NULL; |
564 | peer *next = NULL; | |
a86029b9 | 565 | int fd = theInIcpConnection; |
62e76326 | 566 | |
6fdc2d18 FC |
567 | neighborsRegisterWithCacheManager(); |
568 | ||
cc192b50 | 569 | /* setup addrinfo for use */ |
570 | nul.InitAddrInfo(AI); | |
62e76326 | 571 | |
cc192b50 | 572 | if (fd >= 0) { |
62e76326 | 573 | |
cc192b50 | 574 | if (getsockname(fd, AI->ai_addr, &AI->ai_addrlen) < 0) |
575 | debugs(15, 1, "getsockname(" << fd << "," << AI->ai_addr << "," << &AI->ai_addrlen << ") failed."); | |
62e76326 | 576 | |
577 | for (thisPeer = Config.peers; thisPeer; thisPeer = next) { | |
cc192b50 | 578 | http_port_list *s = NULL; |
62e76326 | 579 | next = thisPeer->next; |
580 | ||
581 | if (0 != strcmp(thisPeer->host, me)) | |
582 | continue; | |
583 | ||
584 | for (s = Config.Sockaddr.http; s; s = s->next) { | |
cc192b50 | 585 | if (thisPeer->http_port != s->s.GetPort()) |
62e76326 | 586 | continue; |
587 | ||
bf8fe701 | 588 | debugs(15, 1, "WARNING: Peer looks like this host"); |
589 | ||
590 | debugs(15, 1, " Ignoring " << | |
591 | neighborTypeStr(thisPeer) << " " << thisPeer->host << | |
592 | "/" << thisPeer->http_port << "/" << | |
593 | thisPeer->icp.port); | |
62e76326 | 594 | |
62e76326 | 595 | neighborRemove(thisPeer); |
596 | } | |
597 | } | |
b263bd3f | 598 | } |
62e76326 | 599 | |
5999b776 | 600 | peerRefreshDNS((void *) 1); |
62e76326 | 601 | |
e6ccf245 | 602 | if (ICP_INVALID == echo_hdr.opcode) { |
62e76326 | 603 | echo_hdr.opcode = ICP_SECHO; |
604 | echo_hdr.version = ICP_VERSION_CURRENT; | |
605 | echo_hdr.length = 0; | |
606 | echo_hdr.reqnum = 0; | |
607 | echo_hdr.flags = 0; | |
608 | echo_hdr.pad = 0; | |
cc192b50 | 609 | nul = *AI; |
610 | nul.GetInAddr( *((struct in_addr*)&echo_hdr.shostid) ); | |
62e76326 | 611 | sep = getservbyname("echo", "udp"); |
612 | echo_port = sep ? ntohs((u_short) sep->s_port) : 7; | |
090089c4 | 613 | } |
62e76326 | 614 | |
c68e4e90 | 615 | first_ping = Config.peers; |
cc192b50 | 616 | nul.FreeAddrInfo(AI); |
62ee09ca | 617 | } |
618 | ||
b8d8561b | 619 | int |
190154cf | 620 | neighborsUdpPing(HttpRequest * request, |
62e76326 | 621 | StoreEntry * entry, |
622 | IRCB * callback, | |
623 | void *callback_data, | |
624 | int *exprep, | |
625 | int *timeout) | |
090089c4 | 626 | { |
3900307b | 627 | const char *url = entry->url(); |
b6c0e933 | 628 | MemObject *mem = entry->mem_obj; |
b69f7771 | 629 | peer *p = NULL; |
090089c4 | 630 | int i; |
1061b406 | 631 | int reqnum = 0; |
6d2296d4 | 632 | int flags; |
9dee2904 | 633 | icp_common_t *query; |
429fdbec | 634 | int queries_sent = 0; |
0a0bf5db | 635 | int peers_pinged = 0; |
a8c926ff | 636 | int parent_timeout = 0, parent_exprep = 0; |
637 | int sibling_timeout = 0, sibling_exprep = 0; | |
1bf2cd49 | 638 | int mcast_timeout = 0, mcast_exprep = 0; |
090089c4 | 639 | |
40a1495e | 640 | if (Config.peers == NULL) |
62e76326 | 641 | return 0; |
642 | ||
9fb13bb6 | 643 | assert(entry->swap_status == SWAPOUT_NONE); |
62e76326 | 644 | |
b6c0e933 | 645 | mem->start_ping = current_time; |
62e76326 | 646 | |
b4e7f82d | 647 | mem->ping_reply_callback = callback; |
62e76326 | 648 | |
b6c0e933 | 649 | mem->ircb_data = callback_data; |
62e76326 | 650 | |
332dafa2 | 651 | reqnum = icpSetCacheKey((const cache_key *)entry->key); |
62e76326 | 652 | |
40a1495e | 653 | for (i = 0, p = first_ping; i++ < Config.npeers; p = p->next) { |
62e76326 | 654 | if (p == NULL) |
655 | p = Config.peers; | |
656 | ||
bf8fe701 | 657 | debugs(15, 5, "neighborsUdpPing: Peer " << p->host); |
62e76326 | 658 | |
659 | if (!peerWouldBePinged(p, request)) | |
660 | continue; /* next peer */ | |
661 | ||
662 | peers_pinged++; | |
663 | ||
bf8fe701 | 664 | debugs(15, 4, "neighborsUdpPing: pinging peer " << p->host << " for '" << url << "'"); |
62e76326 | 665 | |
bf8fe701 | 666 | debugs(15, 3, "neighborsUdpPing: key = '" << entry->getMD5Text() << "'"); |
62e76326 | 667 | |
bf8fe701 | 668 | debugs(15, 3, "neighborsUdpPing: reqnum = " << reqnum); |
090089c4 | 669 | |
dc9d133b | 670 | #if USE_HTCP |
4f4fa815 | 671 | if (p->options.htcp && !p->options.htcp_only_clr) { |
bebf08ff AJ |
672 | if (Config.Port.htcp <= 0) { |
673 | debugs(15, DBG_CRITICAL, "HTCP is disabled! Cannot send HTCP request to peer."); | |
674 | continue; | |
675 | } | |
676 | ||
bf8fe701 | 677 | debugs(15, 3, "neighborsUdpPing: sending HTCP query"); |
bebf08ff | 678 | if (htcpQuery(entry, request, p) <= 0) continue; // unable to send. |
62e76326 | 679 | } else |
dc9d133b | 680 | #endif |
bebf08ff AJ |
681 | { |
682 | if (Config.Port.icp <= 0 || theOutIcpConnection <= 0) { | |
683 | debugs(15, DBG_CRITICAL, "ICP is disabled! Cannot send ICP request to peer."); | |
684 | continue; | |
62e76326 | 685 | } else { |
62e76326 | 686 | |
bebf08ff AJ |
687 | if (p->type == PEER_MULTICAST) |
688 | mcastSetTtl(theOutIcpConnection, p->mcast.ttl); | |
689 | ||
690 | if (p->icp.port == echo_port) { | |
691 | debugs(15, 4, "neighborsUdpPing: Looks like a dumb cache, send DECHO ping"); | |
692 | echo_hdr.reqnum = reqnum; | |
693 | query = _icp_common_t::createMessage(ICP_DECHO, 0, url, reqnum, 0); | |
694 | icpUdpSend(theOutIcpConnection,p->in_addr,query,LOG_ICP_QUERY,0); | |
695 | } else { | |
696 | flags = 0; | |
62e76326 | 697 | |
bebf08ff AJ |
698 | if (Config.onoff.query_icmp) |
699 | if (p->icp.version == ICP_VERSION_2) | |
700 | flags |= ICP_FLAG_SRC_RTT; | |
62e76326 | 701 | |
bebf08ff AJ |
702 | query = _icp_common_t::createMessage(ICP_QUERY, flags, url, reqnum, 0); |
703 | ||
704 | icpUdpSend(theOutIcpConnection, p->in_addr, query, LOG_ICP_QUERY, 0); | |
705 | } | |
62e76326 | 706 | } |
bebf08ff | 707 | } |
62e76326 | 708 | |
709 | queries_sent++; | |
710 | ||
711 | p->stats.pings_sent++; | |
712 | ||
713 | if (p->type == PEER_MULTICAST) { | |
1bf2cd49 | 714 | mcast_exprep += p->mcast.n_replies_expected; |
715 | mcast_timeout += (p->stats.rtt * p->mcast.n_replies_expected); | |
62e76326 | 716 | } else if (neighborUp(p)) { |
717 | /* its alive, expect a reply from it */ | |
718 | ||
719 | if (neighborType(p, request) == PEER_PARENT) { | |
720 | parent_exprep++; | |
721 | parent_timeout += p->stats.rtt; | |
722 | } else { | |
723 | sibling_exprep++; | |
724 | sibling_timeout += p->stats.rtt; | |
725 | } | |
726 | } else { | |
727 | /* Neighbor is dead; ping it anyway, but don't expect a reply */ | |
728 | /* log it once at the threshold */ | |
729 | ||
730 | if (p->stats.logged_state == PEER_ALIVE) { | |
bf8fe701 | 731 | debugs(15, 1, "Detected DEAD " << neighborTypeStr(p) << ": " << p->name); |
62e76326 | 732 | p->stats.logged_state = PEER_DEAD; |
733 | } | |
734 | } | |
735 | ||
736 | p->stats.last_query = squid_curtime; | |
737 | ||
67c8308c | 738 | /* |
739 | * keep probe_start == 0 for a multicast peer, | |
740 | * so neighborUp() never says this peer is dead. | |
741 | */ | |
742 | ||
743 | if ((p->type != PEER_MULTICAST) && (p->stats.probe_start == 0)) | |
62e76326 | 744 | p->stats.probe_start = squid_curtime; |
090089c4 | 745 | } |
62e76326 | 746 | |
40a1495e | 747 | if ((first_ping = first_ping->next) == NULL) |
62e76326 | 748 | first_ping = Config.peers; |
090089c4 | 749 | |
a8c926ff | 750 | /* |
751 | * How many replies to expect? | |
752 | */ | |
1bf2cd49 | 753 | *exprep = parent_exprep + sibling_exprep + mcast_exprep; |
a8c926ff | 754 | |
52040193 | 755 | /* |
465dc415 | 756 | * If there is a configured timeout, use it |
52040193 | 757 | */ |
465dc415 | 758 | if (Config.Timeout.icp_query) |
62e76326 | 759 | *timeout = Config.Timeout.icp_query; |
28993292 | 760 | else { |
62e76326 | 761 | if (*exprep > 0) { |
762 | if (parent_exprep) | |
763 | *timeout = 2 * parent_timeout / parent_exprep; | |
1bf2cd49 | 764 | else if (mcast_exprep) |
765 | *timeout = 2 * mcast_timeout / mcast_exprep; | |
62e76326 | 766 | else |
767 | *timeout = 2 * sibling_timeout / sibling_exprep; | |
768 | } else | |
769 | *timeout = 2000; /* 2 seconds */ | |
770 | ||
771 | if (Config.Timeout.icp_query_max) | |
772 | if (*timeout > Config.Timeout.icp_query_max) | |
773 | *timeout = Config.Timeout.icp_query_max; | |
774 | ||
775 | if (*timeout < Config.Timeout.icp_query_min) | |
776 | *timeout = Config.Timeout.icp_query_min; | |
28993292 | 777 | } |
62e76326 | 778 | |
0a0bf5db | 779 | return peers_pinged; |
090089c4 | 780 | } |
781 | ||
26b164ac | 782 | /* lookup the digest of a given peer */ |
783 | lookup_t | |
190154cf | 784 | peerDigestLookup(peer * p, HttpRequest * request) |
26b164ac | 785 | { |
6cfa8966 | 786 | #if USE_CACHE_DIGESTS |
f66a9ef4 | 787 | const cache_key *key = request ? storeKeyPublicByRequest(request) : NULL; |
26b164ac | 788 | assert(p); |
0c511722 | 789 | assert(request); |
bf8fe701 | 790 | debugs(15, 5, "peerDigestLookup: peer " << p->host); |
4b4cd312 | 791 | /* does the peeer have a valid digest? */ |
62e76326 | 792 | |
e13ee7ad | 793 | if (!p->digest) { |
bf8fe701 | 794 | debugs(15, 5, "peerDigestLookup: gone!"); |
62e76326 | 795 | return LOOKUP_NONE; |
6755df2e | 796 | } else if (!peerHTTPOkay(p, request)) { |
bf8fe701 | 797 | debugs(15, 5, "peerDigestLookup: !peerHTTPOkay"); |
6755df2e | 798 | return LOOKUP_NONE; |
e13ee7ad | 799 | } else if (!p->digest->flags.needed) { |
bf8fe701 | 800 | debugs(15, 5, "peerDigestLookup: note need"); |
62e76326 | 801 | peerDigestNeeded(p->digest); |
802 | return LOOKUP_NONE; | |
4ed0e075 | 803 | } else if (!p->digest->flags.usable) { |
bf8fe701 | 804 | debugs(15, 5, "peerDigestLookup: !ready && " << (p->digest->flags.requested ? "" : "!") << "requested"); |
62e76326 | 805 | return LOOKUP_NONE; |
26b164ac | 806 | } |
62e76326 | 807 | |
bf8fe701 | 808 | debugs(15, 5, "peerDigestLookup: OK to lookup peer " << p->host); |
e13ee7ad | 809 | assert(p->digest->cd); |
26b164ac | 810 | /* does digest predict a hit? */ |
62e76326 | 811 | |
e13ee7ad | 812 | if (!cacheDigestTest(p->digest->cd, key)) |
62e76326 | 813 | return LOOKUP_MISS; |
814 | ||
bf8fe701 | 815 | debugs(15, 5, "peerDigestLookup: peer " << p->host << " says HIT!"); |
62e76326 | 816 | |
26b164ac | 817 | return LOOKUP_HIT; |
62e76326 | 818 | |
26b164ac | 819 | #endif |
62e76326 | 820 | |
26b164ac | 821 | return LOOKUP_NONE; |
822 | } | |
823 | ||
824 | /* select best peer based on cache digests */ | |
a54d3f8e | 825 | peer * |
190154cf | 826 | neighborsDigestSelect(HttpRequest * request) |
a54d3f8e | 827 | { |
828 | peer *best_p = NULL; | |
6cfa8966 | 829 | #if USE_CACHE_DIGESTS |
62e76326 | 830 | |
a54d3f8e | 831 | const cache_key *key; |
832 | int best_rtt = 0; | |
833 | int choice_count = 0; | |
834 | int ichoice_count = 0; | |
835 | peer *p; | |
836 | int p_rtt; | |
837 | int i; | |
62e76326 | 838 | |
03058802 | 839 | if (!request->flags.hierarchical) |
62e76326 | 840 | return NULL; |
841 | ||
f66a9ef4 | 842 | key = storeKeyPublicByRequest(request); |
62e76326 | 843 | |
a54d3f8e | 844 | for (i = 0, p = first_ping; i++ < Config.npeers; p = p->next) { |
62e76326 | 845 | lookup_t lookup; |
846 | ||
847 | if (!p) | |
848 | p = Config.peers; | |
849 | ||
850 | if (i == 1) | |
851 | first_ping = p; | |
852 | ||
853 | lookup = peerDigestLookup(p, request); | |
854 | ||
855 | if (lookup == LOOKUP_NONE) | |
856 | continue; | |
857 | ||
858 | choice_count++; | |
859 | ||
860 | if (lookup == LOOKUP_MISS) | |
861 | continue; | |
862 | ||
863 | p_rtt = netdbHostRtt(p->host); | |
864 | ||
bf8fe701 | 865 | debugs(15, 5, "neighborsDigestSelect: peer " << p->host << " rtt: " << p_rtt); |
62e76326 | 866 | |
867 | /* is this peer better than others in terms of rtt ? */ | |
868 | if (!best_p || (p_rtt && p_rtt < best_rtt)) { | |
869 | best_p = p; | |
870 | best_rtt = p_rtt; | |
871 | ||
872 | if (p_rtt) /* informative choice (aka educated guess) */ | |
873 | ichoice_count++; | |
874 | ||
bf8fe701 | 875 | debugs(15, 4, "neighborsDigestSelect: peer " << p->host << " leads with rtt " << best_rtt); |
62e76326 | 876 | } |
a54d3f8e | 877 | } |
62e76326 | 878 | |
bf8fe701 | 879 | debugs(15, 4, "neighborsDigestSelect: choices: " << choice_count << " (" << ichoice_count << ")"); |
26b164ac | 880 | peerNoteDigestLookup(request, best_p, |
62e76326 | 881 | best_p ? LOOKUP_HIT : (choice_count ? LOOKUP_MISS : LOOKUP_NONE)); |
a54d3f8e | 882 | request->hier.n_choices = choice_count; |
883 | request->hier.n_ichoices = ichoice_count; | |
884 | #endif | |
62e76326 | 885 | |
a54d3f8e | 886 | return best_p; |
887 | } | |
888 | ||
26b164ac | 889 | void |
190154cf | 890 | peerNoteDigestLookup(HttpRequest * request, peer * p, lookup_t lookup) |
26b164ac | 891 | { |
6cfa8966 | 892 | #if USE_CACHE_DIGESTS |
26b164ac | 893 | if (p) |
62e76326 | 894 | strncpy(request->hier.cd_host, p->host, sizeof(request->hier.cd_host)); |
26b164ac | 895 | else |
62e76326 | 896 | *request->hier.cd_host = '\0'; |
897 | ||
26b164ac | 898 | request->hier.cd_lookup = lookup; |
4b981814 | 899 | debugs(15, 4, "peerNoteDigestLookup: peer " << (p? p->host : "<none>") << ", lookup: " << lookup_t_str[lookup] ); |
26b164ac | 900 | #endif |
901 | } | |
902 | ||
d73844ca | 903 | static void |
b69f7771 | 904 | neighborAlive(peer * p, const MemObject * mem, const icp_common_t * header) |
4eda6afe | 905 | { |
32a47e3e | 906 | peerAlive(p); |
44f2f2e4 | 907 | p->stats.pings_acked++; |
62e76326 | 908 | |
27cd7235 | 909 | if ((icp_opcode) header->opcode <= ICP_END) |
62e76326 | 910 | p->icp.counts[header->opcode]++; |
911 | ||
44f2f2e4 | 912 | p->icp.version = (int) header->version; |
913 | } | |
914 | ||
915 | static void | |
916 | neighborUpdateRtt(peer * p, MemObject * mem) | |
917 | { | |
d1b63fc8 | 918 | int rtt, rtt_av_factor; |
62e76326 | 919 | |
d2cd6935 | 920 | if (!mem) |
62e76326 | 921 | return; |
922 | ||
44f2f2e4 | 923 | if (!mem->start_ping.tv_sec) |
62e76326 | 924 | return; |
925 | ||
44f2f2e4 | 926 | rtt = tvSubMsec(mem->start_ping, current_time); |
62e76326 | 927 | |
1b6ef2d2 | 928 | if (rtt < 1 || rtt > 10000) |
62e76326 | 929 | return; |
930 | ||
d1b63fc8 | 931 | rtt_av_factor = RTT_AV_FACTOR; |
62e76326 | 932 | |
d1b63fc8 | 933 | if (p->options.weighted_roundrobin) |
62e76326 | 934 | rtt_av_factor = RTT_BACKGROUND_AV_FACTOR; |
935 | ||
a98bcbee | 936 | p->stats.rtt = Math::intAverage(p->stats.rtt, rtt, p->stats.pings_acked, rtt_av_factor); |
4eda6afe | 937 | } |
090089c4 | 938 | |
399cabec | 939 | #if USE_HTCP |
940 | static void | |
941 | neighborAliveHtcp(peer * p, const MemObject * mem, const htcpReplyData * htcp) | |
942 | { | |
32a47e3e | 943 | peerAlive(p); |
f80286f6 | 944 | p->stats.pings_acked++; |
399cabec | 945 | p->htcp.counts[htcp->hit ? 1 : 0]++; |
44f2f2e4 | 946 | p->htcp.version = htcp->version; |
399cabec | 947 | } |
62e76326 | 948 | |
399cabec | 949 | #endif |
950 | ||
38792624 | 951 | static void |
56b62ecc | 952 | neighborCountIgnored(peer * p) |
a7e59001 | 953 | { |
b69f7771 | 954 | if (p == NULL) |
62e76326 | 955 | return; |
956 | ||
b69f7771 | 957 | p->stats.ignored_replies++; |
62e76326 | 958 | |
c7a3724d | 959 | NLateReplies++; |
a7e59001 | 960 | } |
961 | ||
e102ebda | 962 | static peer *non_peers = NULL; |
963 | ||
964 | static void | |
b7ac5457 | 965 | neighborIgnoreNonPeer(const Ip::Address &from, icp_opcode opcode) |
e102ebda | 966 | { |
967 | peer *np; | |
62e76326 | 968 | |
26ac0430 | 969 | for (np = non_peers; np; np = np->next) { |
cc192b50 | 970 | if (np->in_addr != from) |
62e76326 | 971 | continue; |
972 | ||
cc192b50 | 973 | if (np->in_addr.GetPort() != from.GetPort()) |
62e76326 | 974 | continue; |
975 | ||
976 | break; | |
e102ebda | 977 | } |
62e76326 | 978 | |
26ac0430 | 979 | if (np == NULL) { |
62e76326 | 980 | np = (peer *)xcalloc(1, sizeof(peer)); |
cc192b50 | 981 | np->in_addr = from; |
982 | np->icp.port = from.GetPort(); | |
62e76326 | 983 | np->type = PEER_NONE; |
cc192b50 | 984 | np->host = new char[MAX_IPSTRLEN]; |
985 | from.NtoA(np->host,MAX_IPSTRLEN); | |
62e76326 | 986 | np->next = non_peers; |
987 | non_peers = np; | |
e102ebda | 988 | } |
62e76326 | 989 | |
399cabec | 990 | np->icp.counts[opcode]++; |
62e76326 | 991 | |
e4cc2fdf | 992 | if (isPowTen(++np->stats.ignored_replies)) |
bf8fe701 | 993 | debugs(15, 1, "WARNING: Ignored " << np->stats.ignored_replies << " replies from non-peer " << np->host); |
e102ebda | 994 | } |
995 | ||
429fdbec | 996 | /* ignoreMulticastReply |
26ac0430 | 997 | * |
d6827718 | 998 | * * We want to ignore replies from multicast peers if the |
999 | * * cache_host_domain rules would normally prevent the peer | |
1000 | * * from being used | |
429fdbec | 1001 | */ |
1002 | static int | |
b69f7771 | 1003 | ignoreMulticastReply(peer * p, MemObject * mem) |
429fdbec | 1004 | { |
b69f7771 | 1005 | if (p == NULL) |
62e76326 | 1006 | return 0; |
1007 | ||
cd196bc8 | 1008 | if (!p->options.mcast_responder) |
62e76326 | 1009 | return 0; |
1010 | ||
b69f7771 | 1011 | if (peerHTTPOkay(p, mem->request)) |
62e76326 | 1012 | return 0; |
1013 | ||
429fdbec | 1014 | return 1; |
1015 | } | |
1016 | ||
4b981814 AJ |
1017 | /** |
1018 | * I should attach these records to the entry. We take the first | |
429fdbec | 1019 | * hit we get our wait until everyone misses. The timeout handler |
1020 | * call needs to nip this shopping list or call one of the misses. | |
26ac0430 | 1021 | * |
429fdbec | 1022 | * If a hit process is already started, then sobeit |
1023 | */ | |
b8d8561b | 1024 | void |
b7ac5457 | 1025 | neighborsUdpAck(const cache_key * key, icp_common_t * header, const Ip::Address &from) |
090089c4 | 1026 | { |
b69f7771 | 1027 | peer *p = NULL; |
5ad33356 | 1028 | StoreEntry *entry; |
1029 | MemObject *mem = NULL; | |
b6c0e933 | 1030 | peer_t ntype = PEER_NONE; |
a7e59001 | 1031 | icp_opcode opcode = (icp_opcode) header->opcode; |
090089c4 | 1032 | |
4a7a3d56 | 1033 | debugs(15, 6, "neighborsUdpAck: opcode " << opcode << " '" << storeKeyText(key) << "'"); |
62e76326 | 1034 | |
c8f4eac4 | 1035 | if (NULL != (entry = Store::Root().get(key))) |
62e76326 | 1036 | mem = entry->mem_obj; |
1037 | ||
b69f7771 | 1038 | if ((p = whichPeer(from))) |
62e76326 | 1039 | neighborAlive(p, mem, header); |
1040 | ||
27cd7235 | 1041 | if (opcode > ICP_END) |
62e76326 | 1042 | return; |
1043 | ||
4b981814 | 1044 | const char *opcode_d = icp_opcode_str[opcode]; |
62e76326 | 1045 | |
41587298 | 1046 | if (p) |
62e76326 | 1047 | neighborUpdateRtt(p, mem); |
1048 | ||
5ad33356 | 1049 | /* Does the entry exist? */ |
26ac0430 | 1050 | if (NULL == entry) { |
bf8fe701 | 1051 | debugs(12, 3, "neighborsUdpAck: Cache key '" << storeKeyText(key) << "' not found"); |
62e76326 | 1052 | neighborCountIgnored(p); |
1053 | return; | |
5ad33356 | 1054 | } |
62e76326 | 1055 | |
2d1c6a4f | 1056 | /* check if someone is already fetching it */ |
26ac0430 | 1057 | if (EBIT_TEST(entry->flags, ENTRY_DISPATCHED)) { |
bf8fe701 | 1058 | debugs(15, 3, "neighborsUdpAck: '" << storeKeyText(key) << "' already being fetched."); |
62e76326 | 1059 | neighborCountIgnored(p); |
1060 | return; | |
d2af9477 | 1061 | } |
62e76326 | 1062 | |
26ac0430 | 1063 | if (mem == NULL) { |
bf8fe701 | 1064 | debugs(15, 2, "Ignoring " << opcode_d << " for missing mem_obj: " << storeKeyText(key)); |
62e76326 | 1065 | neighborCountIgnored(p); |
1066 | return; | |
8de2f7ad | 1067 | } |
62e76326 | 1068 | |
26ac0430 | 1069 | if (entry->ping_status != PING_WAITING) { |
bf8fe701 | 1070 | debugs(15, 2, "neighborsUdpAck: Late " << opcode_d << " for " << storeKeyText(key)); |
62e76326 | 1071 | neighborCountIgnored(p); |
1072 | return; | |
8de2f7ad | 1073 | } |
62e76326 | 1074 | |
26ac0430 | 1075 | if (entry->lock_count == 0) { |
bf8fe701 | 1076 | debugs(12, 1, "neighborsUdpAck: '" << storeKeyText(key) << "' has no locks"); |
62e76326 | 1077 | neighborCountIgnored(p); |
1078 | return; | |
090089c4 | 1079 | } |
62e76326 | 1080 | |
bf8fe701 | 1081 | debugs(15, 3, "neighborsUdpAck: " << opcode_d << " for '" << storeKeyText(key) << "' from " << (p ? p->host : "source") << " "); |
62e76326 | 1082 | |
26ac0430 | 1083 | if (p) { |
62e76326 | 1084 | ntype = neighborType(p, mem->request); |
44f2f2e4 | 1085 | } |
62e76326 | 1086 | |
26ac0430 | 1087 | if (ignoreMulticastReply(p, mem)) { |
62e76326 | 1088 | neighborCountIgnored(p); |
26ac0430 | 1089 | } else if (opcode == ICP_MISS) { |
62e76326 | 1090 | if (p == NULL) { |
1091 | neighborIgnoreNonPeer(from, opcode); | |
1092 | } else { | |
1093 | mem->ping_reply_callback(p, ntype, PROTO_ICP, header, mem->ircb_data); | |
1094 | } | |
26ac0430 | 1095 | } else if (opcode == ICP_HIT) { |
62e76326 | 1096 | if (p == NULL) { |
1097 | neighborIgnoreNonPeer(from, opcode); | |
1098 | } else { | |
1099 | header->opcode = ICP_HIT; | |
1100 | mem->ping_reply_callback(p, ntype, PROTO_ICP, header, mem->ircb_data); | |
1101 | } | |
26ac0430 | 1102 | } else if (opcode == ICP_DECHO) { |
62e76326 | 1103 | if (p == NULL) { |
1104 | neighborIgnoreNonPeer(from, opcode); | |
1105 | } else if (ntype == PEER_SIBLING) { | |
1106 | debug_trap("neighborsUdpAck: Found non-ICP cache as SIBLING\n"); | |
1107 | debug_trap("neighborsUdpAck: non-ICP neighbors must be a PARENT\n"); | |
1108 | } else { | |
1109 | mem->ping_reply_callback(p, ntype, PROTO_ICP, header, mem->ircb_data); | |
1110 | } | |
26ac0430 | 1111 | } else if (opcode == ICP_SECHO) { |
62e76326 | 1112 | if (p) { |
bf8fe701 | 1113 | debugs(15, 1, "Ignoring SECHO from neighbor " << p->host); |
62e76326 | 1114 | neighborCountIgnored(p); |
62e76326 | 1115 | } else { |
cc192b50 | 1116 | debugs(15, 1, "Unsolicited SECHO from " << from); |
62e76326 | 1117 | } |
26ac0430 | 1118 | } else if (opcode == ICP_DENIED) { |
62e76326 | 1119 | if (p == NULL) { |
1120 | neighborIgnoreNonPeer(from, opcode); | |
1121 | } else if (p->stats.pings_acked > 100) { | |
1122 | if (100 * p->icp.counts[ICP_DENIED] / p->stats.pings_acked > 95) { | |
bf8fe701 | 1123 | debugs(15, 0, "95%% of replies from '" << p->host << "' are UDP_DENIED"); |
1124 | debugs(15, 0, "Disabling '" << p->host << "', please check your configuration."); | |
62e76326 | 1125 | neighborRemove(p); |
1126 | p = NULL; | |
1127 | } else { | |
1128 | neighborCountIgnored(p); | |
1129 | } | |
1130 | } | |
26ac0430 | 1131 | } else if (opcode == ICP_MISS_NOFETCH) { |
62e76326 | 1132 | mem->ping_reply_callback(p, ntype, PROTO_ICP, header, mem->ircb_data); |
26ac0430 | 1133 | } else { |
bf8fe701 | 1134 | debugs(15, 0, "neighborsUdpAck: Unexpected ICP reply: " << opcode_d); |
d2af9477 | 1135 | } |
090089c4 | 1136 | } |
1137 | ||
deb79f06 | 1138 | peer * |
40a1495e | 1139 | peerFindByName(const char *name) |
98ffb7e4 | 1140 | { |
b69f7771 | 1141 | peer *p = NULL; |
62e76326 | 1142 | |
40a1495e | 1143 | for (p = Config.peers; p; p = p->next) { |
62e76326 | 1144 | if (!strcasecmp(name, p->name)) |
1145 | break; | |
98ffb7e4 | 1146 | } |
62e76326 | 1147 | |
b69f7771 | 1148 | return p; |
98ffb7e4 | 1149 | } |
b012353a | 1150 | |
db1cd23c | 1151 | peer * |
1152 | peerFindByNameAndPort(const char *name, unsigned short port) | |
1153 | { | |
1154 | peer *p = NULL; | |
62e76326 | 1155 | |
db1cd23c | 1156 | for (p = Config.peers; p; p = p->next) { |
62e76326 | 1157 | if (strcasecmp(name, p->name)) |
1158 | continue; | |
1159 | ||
1160 | if (port != p->http_port) | |
1161 | continue; | |
1162 | ||
1163 | break; | |
db1cd23c | 1164 | } |
62e76326 | 1165 | |
db1cd23c | 1166 | return p; |
1167 | } | |
1168 | ||
5269d0bd | 1169 | int |
b69f7771 | 1170 | neighborUp(const peer * p) |
5269d0bd | 1171 | { |
eb406bb7 | 1172 | if (!p->tcp_up) { |
cc192b50 | 1173 | if (!peerProbeConnect((peer *) p)) { |
1174 | debugs(15, 8, "neighborUp: DOWN (probed): " << p->host << " (" << p->in_addr << ")"); | |
4ed0e075 | 1175 | return 0; |
cc192b50 | 1176 | } |
eb406bb7 | 1177 | } |
62e76326 | 1178 | |
64b8103b | 1179 | /* |
1180 | * The peer can not be UP if we don't have any IP addresses | |
26ac0430 | 1181 | * for it. |
64b8103b | 1182 | */ |
cc192b50 | 1183 | if (0 == p->n_addresses) { |
1184 | debugs(15, 8, "neighborUp: DOWN (no-ip): " << p->host << " (" << p->in_addr << ")"); | |
62e76326 | 1185 | return 0; |
cc192b50 | 1186 | } |
62e76326 | 1187 | |
cc192b50 | 1188 | if (p->options.no_query) { |
1189 | debugs(15, 8, "neighborUp: UP (no-query): " << p->host << " (" << p->in_addr << ")"); | |
67c8308c | 1190 | return 1; |
cc192b50 | 1191 | } |
67c8308c | 1192 | |
1193 | if (p->stats.probe_start != 0 && | |
cc192b50 | 1194 | squid_curtime - p->stats.probe_start > Config.Timeout.deadPeer) { |
1195 | debugs(15, 8, "neighborUp: DOWN (dead): " << p->host << " (" << p->in_addr << ")"); | |
67c8308c | 1196 | return 0; |
cc192b50 | 1197 | } |
67c8308c | 1198 | |
cc192b50 | 1199 | debugs(15, 8, "neighborUp: UP: " << p->host << " (" << p->in_addr << ")"); |
03b82057 | 1200 | return 1; |
5269d0bd | 1201 | } |
1202 | ||
e6e3b09b | 1203 | void |
28c60158 | 1204 | peerDestroy(void *data) |
e6e3b09b | 1205 | { |
e6ccf245 | 1206 | peer *p = (peer *)data; |
62e76326 | 1207 | |
ee4a1f5d | 1208 | struct _domain_ping *l = NULL; |
62e76326 | 1209 | |
ee4a1f5d | 1210 | struct _domain_ping *nl = NULL; |
62e76326 | 1211 | |
b69f7771 | 1212 | if (p == NULL) |
62e76326 | 1213 | return; |
1214 | ||
b6a2f15e | 1215 | for (l = p->peer_domain; l; l = nl) { |
62e76326 | 1216 | nl = l->next; |
1217 | safe_free(l->domain); | |
1218 | safe_free(l); | |
ee4a1f5d | 1219 | } |
62e76326 | 1220 | |
b69f7771 | 1221 | safe_free(p->host); |
be753325 | 1222 | safe_free(p->name); |
1223 | safe_free(p->domain); | |
e13ee7ad | 1224 | #if USE_CACHE_DIGESTS |
62e76326 | 1225 | |
fa80a8ef | 1226 | cbdataReferenceDone(p->digest); |
e13ee7ad | 1227 | #endif |
e6e3b09b | 1228 | } |
c7a3724d | 1229 | |
e13ee7ad | 1230 | void |
e16d4250 | 1231 | peerNoteDigestGone(peer * p) |
e13ee7ad | 1232 | { |
1233 | #if USE_CACHE_DIGESTS | |
fa80a8ef | 1234 | cbdataReferenceDone(p->digest); |
e13ee7ad | 1235 | #endif |
1236 | } | |
1237 | ||
dd4bd44e | 1238 | static void |
3ff65596 | 1239 | peerDNSConfigure(const ipcache_addrs *ia, const DnsLookupDetails &, void *data) |
dd4bd44e | 1240 | { |
e6ccf245 | 1241 | peer *p = (peer *)data; |
62e76326 | 1242 | |
dd4bd44e | 1243 | int j; |
62e76326 | 1244 | |
b69f7771 | 1245 | if (p->n_addresses == 0) { |
bf8fe701 | 1246 | debugs(15, 1, "Configuring " << neighborTypeStr(p) << " " << p->host << "/" << p->http_port << "/" << p->icp.port); |
62e76326 | 1247 | |
1248 | if (p->type == PEER_MULTICAST) | |
bf8fe701 | 1249 | debugs(15, 1, " Multicast TTL = " << p->mcast.ttl); |
b69f7771 | 1250 | } |
62e76326 | 1251 | |
b69f7771 | 1252 | p->n_addresses = 0; |
62e76326 | 1253 | |
dd4bd44e | 1254 | if (ia == NULL) { |
bf8fe701 | 1255 | debugs(0, 0, "WARNING: DNS lookup for '" << p->host << "' failed!"); |
62e76326 | 1256 | return; |
dd4bd44e | 1257 | } |
62e76326 | 1258 | |
c04fe656 | 1259 | if ((int) ia->count < 1) { |
bf8fe701 | 1260 | debugs(0, 0, "WARNING: No IP address found for '" << p->host << "'!"); |
62e76326 | 1261 | return; |
dd4bd44e | 1262 | } |
62e76326 | 1263 | |
ff9970cc | 1264 | p->tcp_up = p->connect_fail_limit; |
dc3a5177 | 1265 | |
c04fe656 | 1266 | for (j = 0; j < (int) ia->count && j < PEER_MAX_ADDRESSES; j++) { |
62e76326 | 1267 | p->addresses[j] = ia->in_addrs[j]; |
cc192b50 | 1268 | debugs(15, 2, "--> IP address #" << j << ": " << p->addresses[j]); |
62e76326 | 1269 | p->n_addresses++; |
dd4bd44e | 1270 | } |
62e76326 | 1271 | |
cc192b50 | 1272 | p->in_addr.SetEmpty(); |
1273 | p->in_addr = p->addresses[0]; | |
1274 | p->in_addr.SetPort(p->icp.port); | |
62e76326 | 1275 | |
b69f7771 | 1276 | if (p->type == PEER_MULTICAST) |
62e76326 | 1277 | peerCountMcastPeersSchedule(p, 10); |
1278 | ||
9b5c4a9a | 1279 | #if USE_ICMP |
1a827bc0 | 1280 | if (p->type != PEER_MULTICAST) |
62e76326 | 1281 | if (!p->options.no_netdb_exchange) |
1282 | eventAddIsh("netdbExchangeStart", netdbExchangeStart, p, 30.0, 1); | |
9b5c4a9a AJ |
1283 | #endif |
1284 | ||
dd4bd44e | 1285 | } |
1286 | ||
1287 | static void | |
51242273 | 1288 | peerRefreshDNS(void *data) |
dd4bd44e | 1289 | { |
b69f7771 | 1290 | peer *p = NULL; |
62e76326 | 1291 | |
46ca5fc6 | 1292 | if (eventFind(peerRefreshDNS, NULL)) |
62e76326 | 1293 | eventDelete(peerRefreshDNS, NULL); |
1294 | ||
51242273 | 1295 | if (!data && 0 == stat5minClientRequests()) { |
62e76326 | 1296 | /* no recent client traffic, wait a bit */ |
1297 | eventAddIsh("peerRefreshDNS", peerRefreshDNS, NULL, 180.0, 1); | |
1298 | return; | |
dd4bd44e | 1299 | } |
62e76326 | 1300 | |
1f3c4622 | 1301 | for (p = Config.peers; p; p = p->next) |
62e76326 | 1302 | ipcache_nbgethostbyname(p->host, peerDNSConfigure, p); |
1303 | ||
dd4bd44e | 1304 | /* Reconfigure the peers every hour */ |
52040193 | 1305 | eventAddIsh("peerRefreshDNS", peerRefreshDNS, NULL, 3600.0, 1); |
dd4bd44e | 1306 | } |
e924600d | 1307 | |
4ed0e075 | 1308 | static void |
1309 | peerConnectFailedSilent(peer * p) | |
eb406bb7 | 1310 | { |
1311 | p->stats.last_connect_failure = squid_curtime; | |
62e76326 | 1312 | |
eb406bb7 | 1313 | if (!p->tcp_up) { |
bf8fe701 | 1314 | debugs(15, 2, "TCP connection to " << p->host << "/" << p->http_port << |
1315 | " dead"); | |
62e76326 | 1316 | return; |
eb406bb7 | 1317 | } |
62e76326 | 1318 | |
eb406bb7 | 1319 | p->tcp_up--; |
62e76326 | 1320 | |
eb406bb7 | 1321 | if (!p->tcp_up) { |
bf8fe701 | 1322 | debugs(15, 1, "Detected DEAD " << neighborTypeStr(p) << ": " << p->name); |
62e76326 | 1323 | p->stats.logged_state = PEER_DEAD; |
eb406bb7 | 1324 | } |
1325 | } | |
1326 | ||
4ed0e075 | 1327 | void |
1328 | peerConnectFailed(peer *p) | |
1329 | { | |
bf8fe701 | 1330 | debugs(15, 1, "TCP connection to " << p->host << "/" << p->http_port << " failed"); |
4ed0e075 | 1331 | peerConnectFailedSilent(p); |
1332 | } | |
1333 | ||
eb406bb7 | 1334 | void |
a4b8110e | 1335 | peerConnectSucceded(peer * p) |
eb406bb7 | 1336 | { |
1337 | if (!p->tcp_up) { | |
bf8fe701 | 1338 | debugs(15, 2, "TCP connection to " << p->host << "/" << p->http_port << " succeded"); |
ff9970cc | 1339 | p->tcp_up = p->connect_fail_limit; // NP: so peerAlive(p) works properly. |
32a47e3e | 1340 | peerAlive(p); |
26ac0430 AJ |
1341 | if (!p->n_addresses) |
1342 | ipcache_nbgethostbyname(p->host, peerDNSConfigure, p); | |
1343 | } else | |
ff9970cc | 1344 | p->tcp_up = p->connect_fail_limit; |
eb406bb7 | 1345 | } |
1346 | ||
4ed0e075 | 1347 | /* |
26ac0430 | 1348 | * peerProbeConnect will be called on dead peers by neighborUp |
4ed0e075 | 1349 | */ |
cfd66529 | 1350 | static bool |
a4b8110e | 1351 | peerProbeConnect(peer * p) |
e924600d | 1352 | { |
cfd66529 AJ |
1353 | time_t ctimeout = p->connect_timeout > 0 ? p->connect_timeout : Config.Timeout.peer_connect; |
1354 | bool ret = (squid_curtime - p->stats.last_connect_failure) > (ctimeout * 10); | |
62e76326 | 1355 | |
cfd66529 | 1356 | if (p->testing_now) |
4ed0e075 | 1357 | return ret;/* probe already running */ |
62e76326 | 1358 | |
4ed0e075 | 1359 | if (squid_curtime - p->stats.last_connect_probe == 0) |
1360 | return ret;/* don't probe to often */ | |
62e76326 | 1361 | |
cfd66529 | 1362 | /* for each IP address of this peer. find one that we can connect to and probe it. */ |
f9b72e0c | 1363 | Comm::PathsPointer paths = new Comm::Paths; |
cfd66529 | 1364 | for (int i = 0; i < p->n_addresses; i++) { |
f9b72e0c | 1365 | Comm::ConnectionPointer conn = new Comm::Connection; |
cfd66529 AJ |
1366 | conn->remote = p->addresses[i]; |
1367 | conn->remote.SetPort(p->http_port); | |
1368 | getOutgoingAddress(NULL, conn); | |
1369 | paths->push_back(conn); | |
1370 | } | |
62e76326 | 1371 | |
cfd66529 | 1372 | p->testing_now = true; |
eb406bb7 | 1373 | p->stats.last_connect_probe = squid_curtime; |
62e76326 | 1374 | |
cfd66529 AJ |
1375 | AsyncCall::Pointer call = commCbCall(15,3, "peerProbeConnectDone", CommConnectCbPtrFun(peerProbeConnectDone, p)); |
1376 | ConnectStateData *cs = new ConnectStateData(paths, call); | |
1377 | cs->connect_timeout = ctimeout; | |
1378 | cs->host = xstrdup(p->host); | |
1379 | cs->connect(); | |
4ed0e075 | 1380 | |
1381 | return ret; | |
e924600d | 1382 | } |
1383 | ||
1384 | static void | |
f9b72e0c | 1385 | peerProbeConnectDone(Comm::ConnectionPointer conn, Comm::PathsPointer unused, comm_err_t status, int xerrno, void *data) |
e924600d | 1386 | { |
e6ccf245 | 1387 | peer *p = (peer*)data; |
62e76326 | 1388 | |
98829f69 | 1389 | if (status == COMM_OK) { |
62e76326 | 1390 | peerConnectSucceded(p); |
e924600d | 1391 | } else { |
4ed0e075 | 1392 | peerConnectFailedSilent(p); |
e924600d | 1393 | } |
62e76326 | 1394 | |
55cbb02b | 1395 | conn->close(); |
cfd66529 | 1396 | p->testing_now = false; |
e924600d | 1397 | return; |
1398 | } | |
1399 | ||
429fdbec | 1400 | static void |
1401 | peerCountMcastPeersSchedule(peer * p, time_t when) | |
1402 | { | |
b515fc11 | 1403 | if (p->mcast.flags.count_event_pending) |
62e76326 | 1404 | return; |
1405 | ||
429fdbec | 1406 | eventAdd("peerCountMcastPeersStart", |
62e76326 | 1407 | peerCountMcastPeersStart, |
1408 | p, | |
1409 | (double) when, 1); | |
1410 | ||
b515fc11 | 1411 | p->mcast.flags.count_event_pending = 1; |
429fdbec | 1412 | } |
1413 | ||
1414 | static void | |
1415 | peerCountMcastPeersStart(void *data) | |
1416 | { | |
e6ccf245 | 1417 | peer *p = (peer *)data; |
28c60158 | 1418 | ps_state *psstate; |
429fdbec | 1419 | StoreEntry *fake; |
1420 | MemObject *mem; | |
1421 | icp_common_t *query; | |
007b8be4 | 1422 | int reqnum; |
429fdbec | 1423 | LOCAL_ARRAY(char, url, MAX_URL); |
ce66013b | 1424 | assert(p->type == PEER_MULTICAST); |
b515fc11 | 1425 | p->mcast.flags.count_event_pending = 0; |
cc192b50 | 1426 | snprintf(url, MAX_URL, "http://"); |
1427 | p->in_addr.ToURL(url+7, MAX_URL -8 ); | |
1428 | strcat(url, "/"); | |
e429f975 | 1429 | fake = storeCreateEntry(url, url, request_flags(), METHOD_GET); |
c21ad0f5 | 1430 | HttpRequest *req = HttpRequest::CreateFromUrl(url); |
b24880fe | 1431 | psstate = new ps_state; |
6dd9f4bd | 1432 | psstate->request = HTTPMSGLOCK(req); |
429fdbec | 1433 | psstate->entry = fake; |
1434 | psstate->callback = NULL; | |
99117d82 | 1435 | psstate->callback_data = cbdataReference(p); |
b4e7f82d | 1436 | psstate->ping.start = current_time; |
429fdbec | 1437 | mem = fake->mem_obj; |
6dd9f4bd | 1438 | mem->request = HTTPMSGLOCK(psstate->request); |
429fdbec | 1439 | mem->start_ping = current_time; |
b4e7f82d | 1440 | mem->ping_reply_callback = peerCountHandleIcpReply; |
429fdbec | 1441 | mem->ircb_data = psstate; |
03a1ee42 | 1442 | mcastSetTtl(theOutIcpConnection, p->mcast.ttl); |
007b8be4 | 1443 | p->mcast.id = mem->id; |
332dafa2 | 1444 | reqnum = icpSetCacheKey((const cache_key *)fake->key); |
e6ccf245 | 1445 | query = _icp_common_t::createMessage(ICP_QUERY, 0, url, reqnum, 0); |
429fdbec | 1446 | icpUdpSend(theOutIcpConnection, |
cc192b50 | 1447 | p->in_addr, |
62e76326 | 1448 | query, |
1449 | LOG_ICP_QUERY, | |
1450 | 0); | |
429fdbec | 1451 | fake->ping_status = PING_WAITING; |
1452 | eventAdd("peerCountMcastPeersDone", | |
62e76326 | 1453 | peerCountMcastPeersDone, |
1454 | psstate, | |
99117d82 | 1455 | Config.Timeout.mcast_icp_query / 1000.0, 1); |
b515fc11 | 1456 | p->mcast.flags.counting = 1; |
429fdbec | 1457 | peerCountMcastPeersSchedule(p, MCAST_COUNT_RATE); |
1458 | } | |
1459 | ||
1460 | static void | |
1461 | peerCountMcastPeersDone(void *data) | |
1462 | { | |
e6ccf245 | 1463 | ps_state *psstate = (ps_state *)data; |
429fdbec | 1464 | StoreEntry *fake = psstate->entry; |
99117d82 | 1465 | |
1466 | if (cbdataReferenceValid(psstate->callback_data)) { | |
1467 | peer *p = (peer *)psstate->callback_data; | |
1468 | p->mcast.flags.counting = 0; | |
a98bcbee | 1469 | p->mcast.avg_n_members = Math::doubleAverage(p->mcast.avg_n_members, (double) psstate->ping.n_recv, ++p->mcast.n_times_counted, 10); |
bf8fe701 | 1470 | debugs(15, 1, "Group " << p->host << ": " << psstate->ping.n_recv << |
1471 | " replies, "<< std::setw(4)<< std::setprecision(2) << | |
1472 | p->mcast.avg_n_members <<" average, RTT " << p->stats.rtt); | |
99117d82 | 1473 | p->mcast.n_replies_expected = (int) p->mcast.avg_n_members; |
1474 | } | |
1475 | ||
1476 | cbdataReferenceDone(psstate->callback_data); | |
1477 | ||
b7fe0ab0 | 1478 | EBIT_SET(fake->flags, ENTRY_ABORTED); |
6dd9f4bd | 1479 | HTTPMSGUNLOCK(fake->mem_obj->request); |
d88e3c49 | 1480 | fake->releaseRequest(); |
97b5e68f | 1481 | fake->unlock(); |
6dd9f4bd | 1482 | HTTPMSGUNLOCK(psstate->request); |
1a827bc0 | 1483 | cbdataFree(psstate); |
429fdbec | 1484 | } |
1485 | ||
1486 | static void | |
5942e8d4 | 1487 | peerCountHandleIcpReply(peer * p, peer_t type, protocol_t proto, void *hdrnotused, void *data) |
429fdbec | 1488 | { |
d1b63fc8 | 1489 | int rtt_av_factor; |
1490 | ||
e6ccf245 | 1491 | ps_state *psstate = (ps_state *)data; |
1a827bc0 | 1492 | StoreEntry *fake = psstate->entry; |
1493 | MemObject *mem = fake->mem_obj; | |
1494 | int rtt = tvSubMsec(mem->start_ping, current_time); | |
86aebcda | 1495 | assert(proto == PROTO_ICP); |
1a827bc0 | 1496 | assert(fake); |
1497 | assert(mem); | |
b4e7f82d | 1498 | psstate->ping.n_recv++; |
d1b63fc8 | 1499 | rtt_av_factor = RTT_AV_FACTOR; |
62e76326 | 1500 | |
d1b63fc8 | 1501 | if (p->options.weighted_roundrobin) |
62e76326 | 1502 | rtt_av_factor = RTT_BACKGROUND_AV_FACTOR; |
1503 | ||
a98bcbee | 1504 | p->stats.rtt = Math::intAverage(p->stats.rtt, rtt, psstate->ping.n_recv, rtt_av_factor); |
429fdbec | 1505 | } |
ed7f5615 | 1506 | |
1507 | static void | |
1508 | neighborDumpPeers(StoreEntry * sentry) | |
1509 | { | |
1510 | dump_peers(sentry, Config.peers); | |
1511 | } | |
1512 | ||
1513 | static void | |
1514 | neighborDumpNonPeers(StoreEntry * sentry) | |
1515 | { | |
1516 | dump_peers(sentry, non_peers); | |
1517 | } | |
1518 | ||
a369131d | 1519 | void |
1520 | dump_peer_options(StoreEntry * sentry, peer * p) | |
1521 | { | |
cd196bc8 | 1522 | if (p->options.proxy_only) |
62e76326 | 1523 | storeAppendPrintf(sentry, " proxy-only"); |
1524 | ||
cd196bc8 | 1525 | if (p->options.no_query) |
62e76326 | 1526 | storeAppendPrintf(sentry, " no-query"); |
1527 | ||
d1b63fc8 | 1528 | if (p->options.background_ping) |
62e76326 | 1529 | storeAppendPrintf(sentry, " background-ping"); |
1530 | ||
cd196bc8 | 1531 | if (p->options.no_digest) |
62e76326 | 1532 | storeAppendPrintf(sentry, " no-digest"); |
1533 | ||
cd196bc8 | 1534 | if (p->options.default_parent) |
62e76326 | 1535 | storeAppendPrintf(sentry, " default"); |
1536 | ||
cd196bc8 | 1537 | if (p->options.roundrobin) |
62e76326 | 1538 | storeAppendPrintf(sentry, " round-robin"); |
1539 | ||
f7e1d9ce HN |
1540 | if (p->options.carp) |
1541 | storeAppendPrintf(sentry, " carp"); | |
1542 | ||
1543 | if (p->options.userhash) | |
1544 | storeAppendPrintf(sentry, " userhash"); | |
1545 | ||
1546 | if (p->options.userhash) | |
1547 | storeAppendPrintf(sentry, " sourcehash"); | |
1548 | ||
d1b63fc8 | 1549 | if (p->options.weighted_roundrobin) |
62e76326 | 1550 | storeAppendPrintf(sentry, " weighted-round-robin"); |
1551 | ||
cd196bc8 | 1552 | if (p->options.mcast_responder) |
62e76326 | 1553 | storeAppendPrintf(sentry, " multicast-responder"); |
1554 | ||
8a368316 AJ |
1555 | #if PEER_MULTICAST_SIBLINGS |
1556 | if (p->options.mcast_siblings) | |
1557 | storeAppendPrintf(sentry, " multicast-siblings"); | |
1558 | #endif | |
1559 | ||
678a066c | 1560 | if (p->weight != 1) |
62e76326 | 1561 | storeAppendPrintf(sentry, " weight=%d", p->weight); |
1562 | ||
cd196bc8 | 1563 | if (p->options.closest_only) |
62e76326 | 1564 | storeAppendPrintf(sentry, " closest-only"); |
1565 | ||
dc9d133b | 1566 | #if USE_HTCP |
cd196bc8 | 1567 | if (p->options.htcp) |
62e76326 | 1568 | storeAppendPrintf(sentry, " htcp"); |
26ac0430 AJ |
1569 | if (p->options.htcp_oldsquid) |
1570 | storeAppendPrintf(sentry, " htcp-oldsquid"); | |
1571 | if (p->options.htcp_no_clr) | |
1572 | storeAppendPrintf(sentry, " htcp-no-clr"); | |
1573 | if (p->options.htcp_no_purge_clr) | |
1574 | storeAppendPrintf(sentry, " htcp-no-purge-clr"); | |
1575 | if (p->options.htcp_only_clr) | |
1576 | storeAppendPrintf(sentry, " htcp-only-clr"); | |
dc9d133b | 1577 | #endif |
62e76326 | 1578 | |
cd196bc8 | 1579 | if (p->options.no_netdb_exchange) |
62e76326 | 1580 | storeAppendPrintf(sentry, " no-netdb-exchange"); |
1581 | ||
95e36d02 | 1582 | #if DELAY_POOLS |
62e76326 | 1583 | |
cd196bc8 | 1584 | if (p->options.no_delay) |
62e76326 | 1585 | storeAppendPrintf(sentry, " no-delay"); |
1586 | ||
95e36d02 | 1587 | #endif |
62e76326 | 1588 | |
c68e9c6b | 1589 | if (p->login) |
62e76326 | 1590 | storeAppendPrintf(sentry, " login=%s", p->login); |
1591 | ||
a369131d | 1592 | if (p->mcast.ttl > 0) |
62e76326 | 1593 | storeAppendPrintf(sentry, " ttl=%d", p->mcast.ttl); |
1594 | ||
be753325 | 1595 | if (p->connect_timeout > 0) |
62e76326 | 1596 | storeAppendPrintf(sentry, " connect-timeout=%d", (int) p->connect_timeout); |
1597 | ||
ff9970cc AJ |
1598 | if (p->connect_fail_limit != PEER_TCP_MAGIC_COUNT) |
1599 | storeAppendPrintf(sentry, " connect-fail-limit=%d", p->connect_fail_limit); | |
1600 | ||
be753325 | 1601 | #if USE_CACHE_DIGESTS |
62e76326 | 1602 | |
be753325 | 1603 | if (p->digest_url) |
62e76326 | 1604 | storeAppendPrintf(sentry, " digest-url=%s", p->digest_url); |
1605 | ||
be753325 | 1606 | #endif |
62e76326 | 1607 | |
be753325 | 1608 | if (p->options.allow_miss) |
62e76326 | 1609 | storeAppendPrintf(sentry, " allow-miss"); |
1610 | ||
b0758e04 AJ |
1611 | if (p->options.no_tproxy) |
1612 | storeAppendPrintf(sentry, " no-tproxy"); | |
1613 | ||
be753325 | 1614 | if (p->max_conn > 0) |
62e76326 | 1615 | storeAppendPrintf(sentry, " max-conn=%d", p->max_conn); |
1616 | ||
be753325 | 1617 | if (p->options.originserver) |
62e76326 | 1618 | storeAppendPrintf(sentry, " originserver"); |
1619 | ||
be753325 | 1620 | if (p->domain) |
62e76326 | 1621 | storeAppendPrintf(sentry, " forceddomain=%s", p->domain); |
1622 | ||
26ac0430 AJ |
1623 | if (p->connection_auth == 0) |
1624 | storeAppendPrintf(sentry, " connection-auth=off"); | |
1625 | else if (p->connection_auth == 1) | |
1626 | storeAppendPrintf(sentry, " connection-auth=on"); | |
1627 | else if (p->connection_auth == 2) | |
1628 | storeAppendPrintf(sentry, " connection-auth=auto"); | |
d67acb4e | 1629 | |
a369131d | 1630 | storeAppendPrintf(sentry, "\n"); |
1631 | } | |
1632 | ||
ed7f5615 | 1633 | static void |
1634 | dump_peers(StoreEntry * sentry, peer * peers) | |
1635 | { | |
1636 | peer *e = NULL; | |
cc192b50 | 1637 | char ntoabuf[MAX_IPSTRLEN]; |
ed7f5615 | 1638 | struct _domain_ping *d = NULL; |
1639 | icp_opcode op; | |
06e6d12a | 1640 | int i; |
62e76326 | 1641 | |
ed7f5615 | 1642 | if (peers == NULL) |
62e76326 | 1643 | storeAppendPrintf(sentry, "There are no neighbors installed.\n"); |
1644 | ||
ed7f5615 | 1645 | for (e = peers; e; e = e->next) { |
62e76326 | 1646 | assert(e->host != NULL); |
1647 | storeAppendPrintf(sentry, "\n%-11.11s: %s\n", | |
1648 | neighborTypeStr(e), | |
1649 | e->name); | |
1650 | storeAppendPrintf(sentry, "Host : %s/%d/%d\n", | |
1651 | e->host, | |
1652 | e->http_port, | |
1653 | e->icp.port); | |
1654 | storeAppendPrintf(sentry, "Flags :"); | |
1655 | dump_peer_options(sentry, e); | |
1656 | ||
1657 | for (i = 0; i < e->n_addresses; i++) { | |
1658 | storeAppendPrintf(sentry, "Address[%d] : %s\n", i, | |
cc192b50 | 1659 | e->addresses[i].NtoA(ntoabuf,MAX_IPSTRLEN) ); |
62e76326 | 1660 | } |
1661 | ||
1662 | storeAppendPrintf(sentry, "Status : %s\n", | |
1663 | neighborUp(e) ? "Up" : "Down"); | |
1664 | storeAppendPrintf(sentry, "FETCHES : %d\n", e->stats.fetches); | |
1665 | storeAppendPrintf(sentry, "OPEN CONNS : %d\n", e->stats.conn_open); | |
1666 | storeAppendPrintf(sentry, "AVG RTT : %d msec\n", e->stats.rtt); | |
1667 | ||
1668 | if (!e->options.no_query) { | |
1669 | storeAppendPrintf(sentry, "LAST QUERY : %8d seconds ago\n", | |
1670 | (int) (squid_curtime - e->stats.last_query)); | |
1671 | ||
1672 | if (e->stats.last_reply > 0) | |
1673 | storeAppendPrintf(sentry, "LAST REPLY : %8d seconds ago\n", | |
1674 | (int) (squid_curtime - e->stats.last_reply)); | |
1675 | else | |
1676 | storeAppendPrintf(sentry, "LAST REPLY : none received\n"); | |
1677 | ||
1678 | storeAppendPrintf(sentry, "PINGS SENT : %8d\n", e->stats.pings_sent); | |
1679 | ||
1680 | storeAppendPrintf(sentry, "PINGS ACKED: %8d %3d%%\n", | |
1681 | e->stats.pings_acked, | |
a98bcbee | 1682 | Math::intPercent(e->stats.pings_acked, e->stats.pings_sent)); |
62e76326 | 1683 | } |
1684 | ||
a98bcbee | 1685 | storeAppendPrintf(sentry, "IGNORED : %8d %3d%%\n", e->stats.ignored_replies, Math::intPercent(e->stats.ignored_replies, e->stats.pings_acked)); |
62e76326 | 1686 | |
1687 | if (!e->options.no_query) { | |
1688 | storeAppendPrintf(sentry, "Histogram of PINGS ACKED:\n"); | |
1994bb24 | 1689 | #if USE_HTCP |
62e76326 | 1690 | |
1691 | if (e->options.htcp) { | |
1692 | storeAppendPrintf(sentry, "\tMisses\t%8d %3d%%\n", | |
1693 | e->htcp.counts[0], | |
a98bcbee | 1694 | Math::intPercent(e->htcp.counts[0], e->stats.pings_acked)); |
62e76326 | 1695 | storeAppendPrintf(sentry, "\tHits\t%8d %3d%%\n", |
1696 | e->htcp.counts[1], | |
a98bcbee | 1697 | Math::intPercent(e->htcp.counts[1], e->stats.pings_acked)); |
62e76326 | 1698 | } else { |
1994bb24 | 1699 | #endif |
62e76326 | 1700 | |
1701 | for (op = ICP_INVALID; op < ICP_END; ++op) { | |
1702 | if (e->icp.counts[op] == 0) | |
1703 | continue; | |
1704 | ||
1705 | storeAppendPrintf(sentry, " %12.12s : %8d %3d%%\n", | |
1706 | icp_opcode_str[op], | |
1707 | e->icp.counts[op], | |
a98bcbee | 1708 | Math::intPercent(e->icp.counts[op], e->stats.pings_acked)); |
62e76326 | 1709 | } |
1710 | ||
1994bb24 | 1711 | #if USE_HTCP |
62e76326 | 1712 | |
1713 | } | |
1714 | ||
1994bb24 | 1715 | #endif |
62e76326 | 1716 | |
1717 | } | |
1718 | ||
1719 | if (e->stats.last_connect_failure) { | |
1720 | storeAppendPrintf(sentry, "Last failed connect() at: %s\n", | |
1721 | mkhttpdlogtime(&(e->stats.last_connect_failure))); | |
1722 | } | |
1723 | ||
1724 | if (e->peer_domain != NULL) { | |
1725 | storeAppendPrintf(sentry, "DOMAIN LIST: "); | |
1726 | ||
1727 | for (d = e->peer_domain; d; d = d->next) { | |
1728 | storeAppendPrintf(sentry, "%s%s ", | |
1729 | d->do_ping ? null_string : "!", d->domain); | |
1730 | } | |
1731 | ||
1732 | storeAppendPrintf(sentry, "\n"); | |
1733 | } | |
1734 | ||
a98bcbee | 1735 | storeAppendPrintf(sentry, "keep-alive ratio: %d%%\n", Math::intPercent(e->stats.n_keepalives_recv, e->stats.n_keepalives_sent)); |
ed7f5615 | 1736 | } |
1737 | } | |
86aebcda | 1738 | |
1739 | #if USE_HTCP | |
1740 | void | |
b7ac5457 | 1741 | neighborsHtcpReply(const cache_key * key, htcpReplyData * htcp, const Ip::Address &from) |
86aebcda | 1742 | { |
53525d53 | 1743 | StoreEntry *e = Store::Root().get(key); |
399cabec | 1744 | MemObject *mem = NULL; |
1745 | peer *p; | |
1746 | peer_t ntype = PEER_NONE; | |
26ac0430 AJ |
1747 | debugs(15, 6, "neighborsHtcpReply: " << |
1748 | (htcp->hit ? "HIT" : "MISS") << " " << | |
1749 | storeKeyText(key) ); | |
62e76326 | 1750 | |
88e13392 | 1751 | if (NULL != e) |
62e76326 | 1752 | mem = e->mem_obj; |
1753 | ||
399cabec | 1754 | if ((p = whichPeer(from))) |
62e76326 | 1755 | neighborAliveHtcp(p, mem, htcp); |
1756 | ||
399cabec | 1757 | /* Does the entry exist? */ |
26ac0430 | 1758 | if (NULL == e) { |
bf8fe701 | 1759 | debugs(12, 3, "neighyborsHtcpReply: Cache key '" << storeKeyText(key) << "' not found"); |
62e76326 | 1760 | neighborCountIgnored(p); |
1761 | return; | |
399cabec | 1762 | } |
62e76326 | 1763 | |
399cabec | 1764 | /* check if someone is already fetching it */ |
26ac0430 | 1765 | if (EBIT_TEST(e->flags, ENTRY_DISPATCHED)) { |
bf8fe701 | 1766 | debugs(15, 3, "neighborsUdpAck: '" << storeKeyText(key) << "' already being fetched."); |
62e76326 | 1767 | neighborCountIgnored(p); |
1768 | return; | |
399cabec | 1769 | } |
62e76326 | 1770 | |
26ac0430 | 1771 | if (mem == NULL) { |
bf8fe701 | 1772 | debugs(15, 2, "Ignoring reply for missing mem_obj: " << storeKeyText(key)); |
62e76326 | 1773 | neighborCountIgnored(p); |
1774 | return; | |
399cabec | 1775 | } |
62e76326 | 1776 | |
26ac0430 | 1777 | if (e->ping_status != PING_WAITING) { |
bf8fe701 | 1778 | debugs(15, 2, "neighborsUdpAck: Entry " << storeKeyText(key) << " is not PING_WAITING"); |
62e76326 | 1779 | neighborCountIgnored(p); |
1780 | return; | |
399cabec | 1781 | } |
62e76326 | 1782 | |
26ac0430 | 1783 | if (e->lock_count == 0) { |
bf8fe701 | 1784 | debugs(12, 1, "neighborsUdpAck: '" << storeKeyText(key) << "' has no locks"); |
62e76326 | 1785 | neighborCountIgnored(p); |
1786 | return; | |
399cabec | 1787 | } |
62e76326 | 1788 | |
26ac0430 | 1789 | if (p) { |
62e76326 | 1790 | ntype = neighborType(p, mem->request); |
1791 | neighborUpdateRtt(p, mem); | |
44f2f2e4 | 1792 | } |
62e76326 | 1793 | |
26ac0430 | 1794 | if (ignoreMulticastReply(p, mem)) { |
62e76326 | 1795 | neighborCountIgnored(p); |
1796 | return; | |
399cabec | 1797 | } |
62e76326 | 1798 | |
bf8fe701 | 1799 | debugs(15, 3, "neighborsHtcpReply: e = " << e); |
b4e7f82d | 1800 | mem->ping_reply_callback(p, ntype, PROTO_HTCP, htcp, mem->ircb_data); |
86aebcda | 1801 | } |
62e76326 | 1802 | |
1bd06eff BR |
1803 | /* |
1804 | * Send HTCP CLR messages to all peers configured to receive them. | |
1805 | */ | |
4f4fa815 | 1806 | void |
8dceeee3 | 1807 | neighborsHtcpClear(StoreEntry * e, const char *uri, HttpRequest * req, const HttpRequestMethod &method, htcp_clr_reason reason) |
4f4fa815 BR |
1808 | { |
1809 | peer *p; | |
1810 | char buf[128]; | |
1811 | ||
4f4fa815 BR |
1812 | for (p = Config.peers; p; p = p->next) { |
1813 | if (!p->options.htcp) { | |
1814 | continue; | |
1815 | } | |
1816 | if (p->options.htcp_no_clr) { | |
1817 | continue; | |
1818 | } | |
1819 | if (p->options.htcp_no_purge_clr && reason == HTCP_CLR_PURGE) { | |
1820 | continue; | |
1821 | } | |
1bd06eff | 1822 | debugs(15, 3, "neighborsHtcpClear: sending CLR to " << p->in_addr.ToURL(buf, 128)); |
4f4fa815 BR |
1823 | htcpClear(e, uri, req, method, p, reason); |
1824 | } | |
1825 | } | |
1826 | ||
86aebcda | 1827 | #endif |